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Handheld vision tester and calibration thereof
专利权人:
Michael Bartlett
发明人:
Michael Bartlett,William R. Krenik,Yi-Zhong Wang
申请号:
US13319317
公开号:
US09033508B2
申请日:
2010.05.07
申请国别(地区):
US
年份:
2015
代理人:
摘要:
In one aspect, there is provided a handheld vision tester comprising a display, cursor control, interface port, and camera. The display delivers a series of images making up vision tests to a user who interacts with the vision tests by using the display and cursor control of the handheld vision tester. The camera verifies the user is taking the vision tests. The results of the vision tests are stored in the handheld communication device. The interface port allows for communication of the stored results of the vision tests with external devices. In another aspect, there is provided a calibration system for the handheld vision tester. The calibration system includes a stand to hold the handheld vision tester and a reflective surface substantially parallel to a display of the handheld vision tester.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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